Mechanism for use with articulated mold forms



Dec 25, 1928.

, 1,696,699 H. R. surrER IBCHANISI FOR USE WITH ARTICULATED HOLD FORIS Filed Aug. 2, 1927 Tiofl.

INVENTOR .fiR. Suite! 5 BY 2 ATTORNEY m Patented Dec. 25, 1928.

UNITED STATES HAROLD ROBERT SUI'IER, or GRAND RAPIDS, moment.

MECHANISM FOR 'USE WITH. ARTICULATED MOLD FORMS.

Application filed August 2, 1927. Serial No. 210,197. i i

This invention relates to mold structure of the articulated type employing section spanning ties and locking rods therefor of the general type shown in my prior United States Letters Patent No. 1,574,636, over which it is an improvement.

In mold forms of the type shown in my prior patent, aforesaid, the ends of series of mold spanning tie loops project from opposite faces of the mold structure in vertical alinement and are retained and the mold structure held in articulated form by means of tie rods extending vertically through the alined projecting ends of the loops. After the concrete or other plastic material is poured in the mold andsets, the forms or sections of the mold are removed and reassembled for use again, the tie loops remaining imbedded in the molded mass.

In order to disassemble the mold form sections, the mold locking tie rods must be removed. This operation presents dilficulties which the present invention is designed to overcome. These difiicultiesreside (1) in the tendency of the tie loop ends through which the rods are inserted to lift with and bind on these rods when it is attempted to pull them up out of engagement to release the mold section for disassembly, and (2) in the lack of provision for means to hold the rods from dropping back as they are pulled. up step by step by a pulling tool or other convenient means.

Such a means is provided by the present invention in addition to means for holding the loops against binding friction on the rods as the rods are pulled. A further feature of the invention consists in rod holding means operable tohold the tie rod in selected positions of adjustment as desired. A structure offering this advantage enables, for example, a mold form to be disassembled or inspected piece-meal and permits the upper portion of a poured mold form composed of courses to be retained inmolding contactwith the work while the lower courses are disassembled and, if desired, reassembled and articulated over the upper portion of the first mold form. This is particularly applicable to wall molds and, in the accompanying drawings forming part hereof, and in which a preferable form of the invention is disclosed, one side offa wall mold form of the type described and shown in my prior patent, is shown as illustrative of the application of the invention.

Further advantages and features of construction will be apparent fromthe follow- 111g detailed description when read in connection with these drawings in which:

Fig. 1 is a view in vertical section of the outer wall of a wall mold form showing the mechanism of the present invention comblned therewith,

Fig. 2 is a top plan view thereof on an enlarged scale, 7

Fig. 3 is a vertical section on the same scale on the line 3 3 of Fig. 2, I

Fig. 4 is a horizontal section on the line 44 of Fig. 3.

In these drawings, a series of horizontal. courses of mold form boards 1 resting on a foundation or base course 2 and foundation 3 carry tie loop members 4 spanning the spaced inner and outer board courses of the mold form with their. ends projecting outwardly beyond the opposed faces of the mold form. In the drawings, only one of the spaced courses is shown, but it will be understood that the construction of both sides of the mold form is identical. The tie loop members 4, as shown, are formed of wire formed as a narrow loop, and loopedrends projecting beyond the opposite sides of the form boards-of the mold a predetermined distance, equivlent to the diameter of tie rods 5 which are inserted and extend downwardly through the pro ecting looped ends of the tie wires 4 and bind against these wires and the side of the mold frame to hold or lock the frame in assembled position. In my prior patent above referred to, the tie rods are shown as having one side flattened to provide them with twodifferent diameters, the greatest of which is utilized to lock the tie rods against the frame and tie loop. In accordance with the present invention, I prefer to use a tie rod 5 of uniform diameter toprevent the possibility of accidental loosening.

To withdraw or pull upwardly the tie rod 5, it is necessary to hold down'against upward movement withthe tie rod, the projecting looped ends of the tie loop engaging the rodsince these looped ends tend to act as frictional locks against such upward movement of the tie rod.

the tie rod relatively to certain tie loop members without extending it fully to the ground or foundation.

The structure provided to effect these results comprises spacing rod 6 extending it vertically of the mold structure and hav ng through which the rods its upper end threaded to receive a stop cap 7 resting upon the upper face of a supporting plate 8 having an opening therethrough, 5 may freely pass. Inwardly of 'therod openin this plate is centrally apertured as at 9 to permit certain mold engaging and spacing elements which may be carried by the tie loops 4% at the top of the form to project upwardly therethrough and at either side of the central opening 9 is formed with parallel elongated slots 10 for the reception and guidance of adjusting bolts 11 which extend upwardly through T plates 12 mounted on the under side of the supporting plate 8 at the outer sides of the tie loop at and seating over the top edge of the form board 1 of the uppermost course of the mold form. These '1' plates 12 constitute positioning means since theirvertical members engage the inner side faces of the form boards of the mold and p0s1t1on the lnner edge of the circular rods 5 in contact with its outer face as w ll be seen from an mspection of Flg. 3 of the The spacing rods 6 are mounted on the mold at spaced points substantially alined with the projecting ends of the tie wire loops 1. A series of pairs of spaced sleeves 1314l are clamped to the spacing rod at the points determined by the locations of the tie wires 4 by means of appropriate set screws. The spacing between the sleeves 13-14 is equivalent substantially to the thickness of complemental rod gripping and tie wire abutting jaws 15 having centrally located arcuate bearing surfaces 16 on their inner edges designed to engage the peripheral spacing rod 6 and having their inner ends hooked as at 17 partially to surround and having their edges bevelled to grip the tie rod 5. These complemental jaws outwardly of the bearing portions 16 thereof are formed with complemental squared recesses 18 therein through which a cam rod 19 extends. The jaws 17 are closed on the These jaws 15 are pivotally mounted in the position described by pivot bolts 22 having smooth portions of their shank extending through bores in the faces of the jaws overlying threaded bores formed in opposed lugs 23 offset laterally from opposite sides of the lower sleeve member 14 and unitary therewith.

The cam rod 19 is of sulficient length to extend through and preferably beyond the lowermost pair of gripping jaws of the series. It is formed in cross section as a segment slightly greater than a semi-circle, its flat face providing a low or inoperative cam point and its area of greatest diameter in cross section causing engagement with the edges of the recesses 18 to force the outer ends of the jaws 15 outwardly, this portion of the rod therebyacting as a cam to close the jaws 17 about the tie rod. When the cam rod 19 is reversely turned to relieve the pressure against the jaws, the contractile spring reversely swings the jaws and releases the tie rod. The sleeves 13-4 1 position their pairs of gripping jaws 15 in accordance with the height of the courses of the mold form, the under faces of the gripping aws, in both described positions of the jaws overlying the projecting ends of the tie rods 4 and serving as abutments preventing frictional locking engagement of these tie loops 4 with the tie rod 5 when it is attempted to pull the tie rod upwardly through the alined series of tie loop ends. In this sense, the tie rod 5 acts as a release rod for the mold form. r r

The cam rod 19 is supported in position upon the supporting plate 8. A sleeve 26 is fixed to the cam rod 19 below the supporting plate 8 by means of a set screw and is effective to position the upper end 2 1 of the rod in frictional engagement with the edge of the boss 25.

In the use of the described mechanism, it will be obvious that the series of rod gripping and tie loopabutting jaws are adjusted upon the spacing rod 6 at appropriate intervals to overlie the ends of the tie loops and that when it is desired to release the tie or mold release rod 5 for extraction from the tie loops by upward pull through suitable lifting mechanism or device, the handle 24: of the cam rod 19 is turned to permit the contractile springs 20 to open the jaws 15, the latter continuing, however, to act as abutments preventing binding action of the tie loops i against the rod. As the rod is pulled up one step, the handle 24: may rehaving versely turn to lock the rod against descent by gravity until a further lifting impulse is applied thereto, whereupon the handle 24: is again turned to its jaw releasing position.

The described mechanism represents the preferred embodiment ofthe invention, it

is to be understood, however, that the ins vention assuch is not intended to be limited specifically to the disclosed structural features except as may be necessary by reason of the prior art or the specific language of the following claims.

Having described the invention, what I claim and desire to secure by Letters Patent is:

1. In a sectional articulated mold frame having a plurality of alined tie elements projecting therefrom and engaged and held by a frame locking tie rod extending therethrough, and means operable to grip and releasably to hold said tie rod in such tie-engaging position.

2. In a sectional articulated mold frame a plurality of alined tie elements projecting therefrom and engaged and held by a frame locking tie rod extending there through, and means abutting and holding its engaged projecting tie elements against movement for the pulling of the rod from engagement with said elements.

3. In a sectional articulated mold frame having a plurality of alined tie elements projecting therefrom and engaged and held by a frame locking tie rod extending therethrough, means for releasably holding said tie rod in such engagement, and means abutting and holding its engaged projecting tie elements against movement when the holding means is released for the pulling of the rod from engagement with said elements.

4. In a sectional articulated mold frame having a plurality of alined tieelements projecting therefrom and engaged by a frame-locking tie rod extending therethrough, a support, and means carried by said support for engaging and releasably holding said tie rod in selected positions of adjustment relatively to said tie elements.

5. In a sectional articulated mold frame having a plurality of alined tie elements projecting therefrom and engaged by a frame-locking tie rod extending therethrough, a stationary support, and a plurality of abutment elements projecting therefrom and cooperating with the projecting tie elements to hold them against frictional binding engagement on the rod when the latter is pulled therefrom.

6. In a sectional articulated mold frame.

having a plurality of spaced vertically alined tie elements projecting therefrom and engaged by a tie rod extending vertically therethrough, a stationary support, a plurality of spaced pairs of gripping jaws mounted thereon for movement to and from gripping and holding relation to said rod, saidjaws being. positioned on their support to overlie and abut said tie elements in both rod gripping and releasingpositions of the aws. r

7. In a sectional articulated mold frame having a plurality of spaced vertically alined tie elements projecting therefrom and engaged by a tie rod extending vertically therethrough, a stationary support, a plurality of spaced pairs of gripping jaws pivotally mounted thereon for movement to and from grippingand holding relation to said rod, said jaws beingpositioned on the support to overlie and abut said tie elements in both rod gripping and releasing positions of the jaws, means normally tending to maintain said jaws in rod released position, and means operable to close and releasably to hold the jaws in rod gripping and holding relation.

8. In a sectional articulated mold frame having a plurality of. spaced Vertically alined tie elements projecting therefrom and a frame-locking tie rod extending vertically therethrough, a spacing bar extending in parallel with the tie rod, a support for the upper end of said bar mounted upon and cooperating with the top of the mold frame determinately to space said bar from the tie rod, a plurality of pairs of tie rod gripping jaws adjustably mounted on said spacer bar in vertically spaced relation to overlie the projecting tie element-s engaged by said tie rod and movable to and from gripping and supportingrelation to the tie rod, and an operating member for said plurality of gripping jaws carried by said support and depending therefrom substantially parallel to the spacing bar.

9. A holding and releasing mechanism for the tie rods of articulated mold forms, coinprising a supporting plate for attachment to the top of a mold frame, a spacing bar secured to and depending from said plate, a plurality of tie rod gripping elements mounted thereon in spaced relation longitudinally of the bar, and a common means operable to effect rod grip-ping and releasing action of the plurality of gripping elements thereon.

10. A holding and releasing mechanism for tie rods of articulated mold frames, comprising a support for attachment to the mold frame, a spacing bar rigidly connected to and extending therefrom, a plurality of rod gripping instrumentalities adjustably mounted on said bar in spaced relation longitudinally thereof, and means for operating said instrumentalities in unison.

11. A holding and releasing mechanism for the tie rods of articulated mold frames, comprising a support for attachment to the mold frame, a spacing bar connected to and extending therefrom, a rod gripping element mounted on said bar in cooperative relation to the tie rod, and means for operating said element.

12. A holding and releasing mechanism for the tie rods of articulated mold frames comprising a support for attachment to the mold frame, a spacing bar carried and determinately spaced thereby from the side of the engaged frame, a plurality of pairs of rod gripping jaws pivotally mounted on said 10 bar in adjustably spaced relation longitudinally thereof, and operating means for said plurality of pairs of jaws mounted on said support and extending substantially parallel with the spacing bar HAROLD ROBERT SUITER. 

